Groton New London Airport

KGON / GON

Groton, US

Last Updated
Apr 22, 11:32Z

Current Weather

Display Units
Fresh 14 min ago
11:32Z

☀️ Day
MVFR
Flight Rules
6°C
Temperature
Dewpoint: 3°C
11 kt
190°
10 SM
Visibility
1,700 ft
Ceiling
Above Ground Level
1023 hPa
QNH
Altimeter Setting

Raw METAR

SPECI KGON 221132Z 19011KT 10SM BKN017 OVC029 06/03 A3020 RMK AO2 RAE17 P0000 T00610033

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 9 ft
BKN 1,700 ft AGL
OVC 2,900 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
1,700 ft
AGL (Above Ground)
1,709 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
2,900 ft
AGL (Above Ground)
2,909 ft AMSL

Weather Briefing

MVFR

Groton New London Airport is currently reporting marginal VFR (MVFR) conditions with overcast skies at 2,900 feet and 10 SM visibility.

Wind Analysis

Winds are from the south (190°) at 11 knots. Runway 23 is favored with a 8-knot headwind and 7-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 1700 feet AGL (broken), placing conditions in the MVFR category.

Temperature & Moisture

Temperature is 6°C (43°F) with a dewpoint of 3°C. The narrow temperature-dewpoint spread suggests high humidity and potential for visibility restrictions, especially during cooling periods.

Forecast Outlook

The TAF forecast covers the next 21 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Light Showers Rain, Mist. There is a 30% probability of VFR conditions with Light Showers Rain between 09:00Z and 12:00Z. Temporary MVFR conditions are forecast with Light Showers Rain between 12:00Z and 16:00Z.

Pilot Recommendations

VFR pilots should exercise caution. Consider filing IFR if instrument rated, or postponing the flight if conditions are expected to deteriorate further. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1023 hPa
Sea Level Pressure
For altitude above MSL
QFE
1023 hPa
Field Pressure
Height above aerodrome (9 ft)
Pressure Alt
-284 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -1,362 ft
ISA Deviation: -9.0°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGON 220831Z 2209/2306 18012G18KT P6SM OVC050 PROB30 2209/2212 -SHRA FM221200 17014G19KT 4SM BR VCSH OVC040 TEMPO 2212/2216 5SM -SHRA OVC015 FM221600 16012G18KT 2SM BR VCSH SCT006 BKN012 FM221900 10008KT 3SM BR BKN006 FM222300 07005KT 3SM BR BKN006
Upcoming Changes (Next 12 Hours)
11:45Z BASE
+0h
VFR 180° 12 kt
Visibility: >6SM
Ceiling: 5,000 ft
12:00Z FM221200
+1h
MVFR 170° 14 kt
Visibility: 4SM
Ceiling: 4,000 ft
Mist
12:00Z TEMPO
+1h
MVFR
Visibility: 5SM
Ceiling: 1,500 ft
Light Showers Rain
16:00Z FM221600
+5h
IFR 160° 12 kt
Visibility: 2SM
Ceiling: 1,200 ft
Mist

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
GON
05
23 ✈️
15
33

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 05/23
Active: 23
5,000 ft 150 ft ASP 34°
8.4 kt 7.1 kt
40° angle
15/33 4,000 ft 96 ft ASP 135°
6.3 kt 9.0 kt
55° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KGON

6,319 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
73%
MVFR
14.5%
IFR
8%
LIFR
4.4%

Groton New London Airport typically experiences VFR conditions 73% of the time, though instrument-rated pilots will find IFR weather present approximately 12.4% of observations. Prevailing winds are from the N averaging 9.3 knots, with gusts recorded up to 41 knots. Calm conditions occur 10.1% of the time. Temperature extremes range from -18°C to 25°C, reflecting significant seasonal variation. The best months for VFR flying are November, December, September.

Wind Analysis

Prevailing Direction: N (0°)
Average Speed: 9.3 kt
Maximum Recorded: 41 kt
Calm Winds: 10.1%
Direction Distribution:
N
17.7%
NE
8.7%
E
5.1%
SE
4.3%
S
11.1%
SW
12.4%
W
17%
NW
13.6%

Temperature Range

Average: 4.5°C
Range: -18°C to 25°C
-18°C 25°C

Visibility

Average: 9.1 SM
Below 3 SM: 3.8%
Fog Frequency: 4.5%

Best Months for VFR

November December September

Runway Wind Analysis

Runway 05/23
Favorable wind: 100%
Avg crosswind: 5.8 kt
Runway 15/33
Favorable wind: 100%
Avg crosswind: 5.8 kt

Statistics computed from 6,319 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Groton New London Airport - Airport Information

Airport Details

ICAO Code: KGON
IATA Code: GON
Type: medium airport
Status: active
Elevation: 9 ft MSL

Location

City: Groton
Country: US
Latitude: 41.330101°
Longitude: -72.045097°
Time Zone: Etc/GMT+5

Runway Information

Runway 05/23
Length: 5,000 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 15/33
Length: 4,000 ft
Width: 96 ft
Surface: ASP
ILS: No

About Groton New London Airport

Overview

Groton New London Airport serves southeastern Connecticut as a medium-sized airport located near the coastal region. Situated at a low elevation of 9 feet MSL, the airport provides critical aviation infrastructure for the Groton and New London metropolitan areas, supporting both general aviation and potential regional commercial operations.

Flying Conditions

The airport experiences predominantly VFR conditions, with 75.7% of observed weather periods suitable for visual flight rules. Wind patterns are consistently westerly at 270 degrees, averaging 9.3 knots with occasional gusts up to 41 knots. Temperature variations are significant, ranging from -14°C to 25°C, which pilots should consider for performance planning.

Notable Features

Both runways are asphalt-surfaced with substantial lengths: Runway 05/23 at 5000 feet and Runway 15/33 at 4000 feet. The coastal location suggests potential for rapidly changing weather conditions, with an average visibility of 9.3 statute miles and occasional periods of reduced visibility or fog affecting approximately 2% of observations.

Approach Considerations

Both runways demonstrate favorable wind alignment, with 100% wind compatibility for approaches. Average crosswind components are moderate, at 5.5 knots for Runway 05/23 and 6.3 knots for Runway 15/33. November, December, and September statistically offer the most consistent VFR flying conditions for pilots planning operations at this airport.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.